Authors: SEDERBERGOLSEN J SEDERBERGOLSEN N THOMSEN J BALLE V

Citation: J. Sederbergolsen et al., PROBLEMS IN RECRUITING PATIENTS TO CONTROLLED TRIALS ON CHILDREN WITHSECRETORY OTITIS-MEDIA - A DEMOGRAPHIC COMPARISON OF EXCLUDED VERSUS INCLUDED PATIENTS, International journal of pediatric otorhinolaryngology, 43(3), 1998, pp. 229-233